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Title: Changes in soil carbon storage after cultivation

Abstract

Previously published data from 625 paired soil samples were used to predict carbon in cultivated soil as a function of initial carbon content. A 30-cm sampling depth provided a less variable estimate (r/sup 2/ = 0.9) of changes in carbon than a 15-cm sampling depth (r/sup 2/ = 0.6). Regression analyses of changes in carbon storage in relation to years of cultivation confirmed that the greatest rates of change occurred in the first 20 yr. An initial carbon effect was present in all analyses: soils very low in carbon tended to gain slight amounts of carbon after cultivation, but soils high in carbon lost at least 20% during cultivation. Carbon losses from most agricultural soils are estimated to average less than 20% of initial values or less than 1.5 kg/cm/sup 2/ within the top 30 cm. These estimates should not be applied to depths greater than 30 cm and would be improved with more bulk density information and equivalent sample volumes.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN
OSTI Identifier:
6528497
Resource Type:
Journal Article
Journal Name:
Soil Sci.; (United States)
Additional Journal Information:
Journal Volume: 142:5
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 60 APPLIED LIFE SCIENCES; CARBON; ECOLOGICAL CONCENTRATION; LOSSES; SOILS; CHEMICAL COMPOSITION; CULTIVATION; CARBON CYCLE; REGRESSION ANALYSIS; SAMPLING; VARIATIONS; ELEMENTS; MATHEMATICS; NONMETALS; STATISTICS; 510200* - Environment, Terrestrial- Chemicals Monitoring & Transport- (-1989); 553000 - Agriculture & Food Technology

Citation Formats

Mann, L K. Changes in soil carbon storage after cultivation. United States: N. p., 1986. Web. doi:10.1097/00010694-198611000-00006.
Mann, L K. Changes in soil carbon storage after cultivation. United States. https://doi.org/10.1097/00010694-198611000-00006
Mann, L K. Sat . "Changes in soil carbon storage after cultivation". United States. https://doi.org/10.1097/00010694-198611000-00006.
@article{osti_6528497,
title = {Changes in soil carbon storage after cultivation},
author = {Mann, L K},
abstractNote = {Previously published data from 625 paired soil samples were used to predict carbon in cultivated soil as a function of initial carbon content. A 30-cm sampling depth provided a less variable estimate (r/sup 2/ = 0.9) of changes in carbon than a 15-cm sampling depth (r/sup 2/ = 0.6). Regression analyses of changes in carbon storage in relation to years of cultivation confirmed that the greatest rates of change occurred in the first 20 yr. An initial carbon effect was present in all analyses: soils very low in carbon tended to gain slight amounts of carbon after cultivation, but soils high in carbon lost at least 20% during cultivation. Carbon losses from most agricultural soils are estimated to average less than 20% of initial values or less than 1.5 kg/cm/sup 2/ within the top 30 cm. These estimates should not be applied to depths greater than 30 cm and would be improved with more bulk density information and equivalent sample volumes.},
doi = {10.1097/00010694-198611000-00006},
url = {https://www.osti.gov/biblio/6528497}, journal = {Soil Sci.; (United States)},
number = ,
volume = 142:5,
place = {United States},
year = {1986},
month = {11}
}